1 | //===----------------------------------------------------------------------===// |
2 | // |
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | // See https://llvm.org/LICENSE.txt for license information. |
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
6 | // |
7 | //===----------------------------------------------------------------------===// |
8 | |
9 | // <memory> |
10 | |
11 | // shared_ptr |
12 | |
13 | // explicit operator bool() const; |
14 | |
15 | #include <memory> |
16 | #include <cassert> |
17 | #include <type_traits> |
18 | |
19 | #include "test_macros.h" |
20 | |
21 | struct A { |
22 | int a; |
23 | virtual ~A() {} |
24 | }; |
25 | struct B : A {}; |
26 | |
27 | int main(int, char**) |
28 | { |
29 | static_assert(std::is_constructible<bool, std::shared_ptr<A> >::value, "" ); |
30 | static_assert(!std::is_convertible<std::shared_ptr<A>, bool>::value, "" ); |
31 | |
32 | { |
33 | const std::shared_ptr<int> p(new int(32)); |
34 | assert(p); |
35 | } |
36 | { |
37 | const std::shared_ptr<int> p; |
38 | assert(!p); |
39 | } |
40 | #if !defined(TEST_HAS_NO_RTTI) |
41 | { |
42 | std::shared_ptr<A> basePtr = std::make_shared<B>(); |
43 | std::shared_ptr<B> sp = std::dynamic_pointer_cast<B>(r: basePtr); |
44 | assert(sp); |
45 | } |
46 | #endif |
47 | |
48 | return 0; |
49 | } |
50 | |